Cabochon-cut Apatite Size Chart
Carat to mm size chart for cabochon-cut Apatite, from 0.25ct to 40ct (at an L/W ratio of 1.5). The chart is interactive, meaning you can click on any stone to view it directly in the size simulator.
Gem sizes are shown in actual, real-world size, provided your device screen size is in diagonal. If this is not correct, change it here:
Gem sizes are shown in actual, real-world size, provided your device screen size is in diagonal. If this is not correct, change it here:
Actual size is set for screen
Gemstone:
Shape:
Apatite Size Chart (Cabochon Cut)
0.25ct
4.65×3.1 mm
4.65×3.1 mm
0.5ct
5.85×3.9 mm
5.85×3.9 mm
0.75ct
6.71×4.47 mm
6.71×4.47 mm
1ct
7.37×4.91 mm
7.37×4.91 mm
1.25ct
7.94×5.29 mm
7.94×5.29 mm
1.5ct
8.45×5.63 mm
8.45×5.63 mm
1.75ct
8.88×5.92 mm
8.88×5.92 mm
2ct
9.29×6.19 mm
9.29×6.19 mm
2.5ct
10.01×6.67 mm
10.01×6.67 mm
3ct
10.64×7.09 mm
10.64×7.09 mm
3.5ct
11.19×7.46 mm
11.19×7.46 mm
4ct
11.7×7.8 mm
11.7×7.8 mm
4.5ct
12.17×8.11 mm
12.17×8.11 mm
5ct
12.6×8.4 mm
12.6×8.4 mm
5.5ct
13.02×8.68 mm
13.02×8.68 mm
6ct
13.4×8.93 mm
13.4×8.93 mm
6.5ct
13.76×9.17 mm
13.76×9.17 mm
7ct
14.1×9.4 mm
14.1×9.4 mm
7.5ct
14.43×9.62 mm
14.43×9.62 mm
8ct
14.75×9.83 mm
14.75×9.83 mm
8.5ct
15.05×10.03 mm
15.05×10.03 mm
9ct
15.33×10.22 mm
15.33×10.22 mm
9.5ct
15.62×10.41 mm
15.62×10.41 mm
10ct
15.89×10.59 mm
15.89×10.59 mm
11ct
16.4×10.93 mm
16.4×10.93 mm
12ct
16.88×11.25 mm
16.88×11.25 mm
13ct
17.34×11.56 mm
17.34×11.56 mm
14ct
17.78×11.85 mm
17.78×11.85 mm
15ct
18.18×12.12 mm
18.18×12.12 mm
16ct
18.57×12.38 mm
18.57×12.38 mm
17ct
18.96×12.64 mm
18.96×12.64 mm
18ct
19.32×12.88 mm
19.32×12.88 mm
19ct
19.67×13.11 mm
19.67×13.11 mm
20ct
20.01×13.34 mm
20.01×13.34 mm
22ct
20.66×13.77 mm
20.66×13.77 mm
24ct
21.27×14.18 mm
21.27×14.18 mm
26ct
21.84×14.56 mm
21.84×14.56 mm
28ct
22.38×14.92 mm
22.38×14.92 mm
30ct
22.91×15.27 mm
22.91×15.27 mm
33ct
23.64×15.76 mm
23.64×15.76 mm
36ct
24.35×16.23 mm
24.35×16.23 mm
40ct
25.22×16.81 mm
25.22×16.81 mm
Length-to-width ratio: 1.5, Color:
Download Chart
Note: If you want to cut out the shapes and try them on your finger, print out the PDF chart. The image (png) chart will not print at actual size.
Carat-to-MM Conversion Table
Use this conversion table to quickly convert cabochon-cut Apatite carat weights to their approximate millimeter (mm) sizes:
| Carat Weight | MM Size |
|---|---|
| 0.25 ct | 4.65×3.1 mm |
| 0.5 ct | 5.85×3.9 mm |
| 0.75 ct | 6.71×4.47 mm |
| 1 ct | 7.37×4.91 mm |
| 1.25 ct | 7.94×5.29 mm |
| 1.5 ct | 8.45×5.63 mm |
| 1.75 ct | 8.88×5.92 mm |
| 2 ct | 9.29×6.19 mm |
| 2.5 ct | 10.01×6.67 mm |
| 3 ct | 10.64×7.09 mm |
| 3.5 ct | 11.19×7.46 mm |
| 4 ct | 11.7×7.8 mm |
| 4.5 ct | 12.17×8.11 mm |
| 5 ct | 12.6×8.4 mm |
| 5.5 ct | 13.02×8.68 mm |
| 6 ct | 13.4×8.93 mm |
| 6.5 ct | 13.76×9.17 mm |
| 7 ct | 14.1×9.4 mm |
| 7.5 ct | 14.43×9.62 mm |
| 8 ct | 14.75×9.83 mm |
| 8.5 ct | 15.05×10.03 mm |
| Carat Weight | MM Size |
|---|---|
| 9 ct | 15.33×10.22 mm |
| 9.5 ct | 15.62×10.41 mm |
| 10 ct | 15.89×10.59 mm |
| 11 ct | 16.4×10.93 mm |
| 12 ct | 16.88×11.25 mm |
| 13 ct | 17.34×11.56 mm |
| 14 ct | 17.78×11.85 mm |
| 15 ct | 18.18×12.12 mm |
| 16 ct | 18.57×12.38 mm |
| 17 ct | 18.96×12.64 mm |
| 18 ct | 19.32×12.88 mm |
| 19 ct | 19.67×13.11 mm |
| 20 ct | 20.01×13.34 mm |
| 22 ct | 20.66×13.77 mm |
| 24 ct | 21.27×14.18 mm |
| 26 ct | 21.84×14.56 mm |
| 28 ct | 22.38×14.92 mm |
| 30 ct | 22.91×15.27 mm |
| 33 ct | 23.64×15.76 mm |
| 36 ct | 24.35×16.23 mm |
| 40 ct | 25.22×16.81 mm |